The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member.Find how much younger is the new member ?
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Total monthly income of 4 team members = 7500*4 = 30,000
Total monthly income of 3 team members = 6330*3 = 18,990
Monthly income of the member whi left the team = (30,000 - 18,990) = 11,010
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